One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,7)(3,8,4,6)(17,18,20,24)(19,26,27,22)(21,30,29,25)(23,31,32,28)(1,3,5,4)(2,6,7,8)(9,10,12,13)(11,14,15,16)(17,19)(18,22)(20,27)(21,28)(23,25)(24,26)(29,31)(30,32)(10,13)(11,15)(17,19)(18,23)(20,27)(21,31)(22,25)(24,32)(26,30)(28,29) involution — undirected(1,4,5,3)(2,6,7,8)(9,11)(10,14)(12,15)(13,16)(10,13)(11,15)(19,27)(22,26)(23,32)(28,31) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.